Number of the day

16 percent

That's how much of Apple's revenue came from China last quarter, according to data compiled by Bloomberg. The company could face a tougher environment in China after the government excluded Apple products such as iPads and iPad Minis from its list of devices that can be bought with public money because of security concerns, officials say. The ban also could limit sales of business-software apps that IBM is developing for Apple's tablets.

Hear here

"If Sprint can't buy T-Mobile, it will be difficult for Sprint to do business. I'm concerned about Sprint's operations."

Yoshihiro Nakatani, a senior fund manager at Asahi Life Asset Management, on Sprint ending talks to acquire T-Mobile. The potential benefits of combining the third- and fourth-largest U.S. wireless carriers were outweighed by regulatory concerns, one source said. The decision ends a nine-month effort by Sprint, which is controlled by Japanese billionaire Masayoshi Son's SoftBank, to create a rival to Verizon and AT&T.

Heads up

Zynga reports financial results on Thursday, and analysts predict that the struggling video game maker will post a 32 percent decline in revenue to $157 million. The net loss is expected to increase fourfold to $63 million. Under founder and former CEO Mark Pincus, the San Francisco company made "FarmVille" a hit game on Facebook but failed to come up with titles for smartphones and tablets, where many gamers have migrated.